The true course between two points is 057°....

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Question 1 of 2066636ee928f7522a1c51a3af

The true course between two points is 057°. Your gyrocompass has an error of 3° east and you make an allowance of 1° leeway for a north-northwest wind. Which gyro course should be steered to make the true course good?

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Question 1 of 20

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🔍 Key Concepts

• Relationship between true course, leeway, and gyro course • How a gyro error east affects the indicated gyro reading • The sign (add/subtract) when correcting for leeway caused by wind from a given direction

💭 Think About

• Sketch the situation: with a north-northwest wind, which way will the vessel actually be pushed—toward port or starboard? • If the gyrocompass reads too far east (gyro error east), what must the TRUE direction be compared to the GYRO course you steer? • Starting from the true course, decide step‑by‑step whether to add or subtract leeway, then whether to add or subtract gyro error to arrive at the gyro course to steer.

✅ Before You Answer

• Be clear which way leeway acts: the bow points into the wind, but the vessel is set downwind. • Remember the definition of gyro error east: "gyro least, error east" (and the reverse). • Track each step with a simple table: T → (± leeway) → G → (± gyro error) → Gc, making sure the direction of each correction makes sense with your sketch.

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